CPPT Darien LLC [Member]CPPT Darien (in dollars per share)Represents information pertaining to CPPT Darien LLC.Area of LandArea of medical office building (in square feet)Area of property (in square feet)Clarion Partners CPPT Coinvestment LLC [Member]CPPT CoinvestmentRepresents information pertaining to Clarion Partners CPPT Coinvestment, LLC.CPPT Lehigh LLC [Member]CPPT LehighRepresents information pertaining to CPPT Lehigh LLC.LIT Industrial Limited Partnership [Member]LITRepresents information pertaining to LIT Industrial Limited Partnership.Advisor Fee Fixed Component Calculation Daily Accrual Percentage of Net Asset Value for Each ClassFixed component daily accrual proportion of net asset value for each class (as a percent)Represents the percentage of the entity's net asset value for each class, used for calculating the amount of fixed component of advisory fee that accrues daily.Organization and Offering Costs Reimbursement Period from End of Escrow PeriodPeriod after end of Escrow Period that Company will make organization and offering cost reimbursementsThe period of time after the end of the Escrow Period that reimbursements of organization and offering costs are made by the entity.Award Type [Axis]Advisor Fee Fixed Component Start Date Determination Minimum Required Proceeds from Issuance of Common StockMinimum gross offering proceeds required to be received from the issue of any combination of Class A or Class W shares to determine the start date of the fixed component of the advisor's feeRepresents the minimum gross offering proceeds that are required to be received from the issue of any combination of Class A or Class W shares to determine the start date of the fixed component of the advisor's fee.Advisor Fee Performance Component Calculation Minimum Return Per Share Allocable to Class of StockMinimum return to stockholders of any class, used to calculate performance component (as a percent)Represents the minimum return per share allocable to the class of shares which is the basis for calculation of performance component of advisory fee.Advisor Fee Performance Component Minimum Net Asset Value Per ShareMinimum threshold of net asset value per share, used for calculation of performance component (in dollars per share)Represents the minimum net asset value per share considered for payment of performance component of advisor fee. If the net asset value decreases below this value, the increase in net asset value per share to this value will not be included in calculation of performance component.Advisor Fee Performance Component Percentage of Aggregate Total Return Allocable to Class of StockMaximum threshold of performance component, as a percentage of aggregate total return allocable to a class of shareRepresents the maximum threshold of performance component, as a percentage of aggregate total return allocable to a class of share.Amendment DescriptionAdvisor Fee Performance Component Percentage of Excess Total Return Allocable to Class of StockPerformance component of advisory fee as percentage of excess total return allocable to class of stockRepresents the portion of excess total return allocable to class of shares as a part of performance component of advisory fees.Amendment FlagAll States and Provinces [Axis]Represents the information with reference to the geopolitical segments of United States or Canada.Represents the stock redemption limit as a percentage of the entity's total net asset value per calendar year.Annual Stock Redemption Limit as Percentage of Total NAV in Any12 Month PeriodPercentage of stock redemption limit of the company's total NAV in any 12 month periodRepresents the advisors who manage day to day operations and portfolio of properties and related real estate related assets.CPT Advisors LLC [Member]AdvisorCPT Advisors LLC and ING Investments Distributor LLC [Member]Advisor and Dealer ManagerRepresents information in the aggregate pertaining to CPT Advisors, LLC (Advisor) and ING Investments Distributor, LLC (Dealer Manager).CPT OP Partner LLC [Member]CPT OP PartnerRepresents CPT OP Partner LLC, an initial limited partner of the Operating Partnership, and later a wholly-owned subsidiary of the reporting entity.CPT Real Estate LP [Member]Operating PartnershipRepresents CPT Real Estate LP, the "Operating Partnership".Clarion Partners LLC [Member]Clarion PartnersRepresents Clarion Partners, LLC, a sponsor of the entity.Common Class A and Class W [Member]Class A shares and Class W sharesClassification of common stock representing ownership interest in a corporation.Class WA classification of common stock that has different rights than those of Common Class A.Common Class W [Member]Class W sharesCommon Stock Value Available in Distribution Reinvestment PlanCommon stock pursuant to distribution reinvestment planRepresents the value of common stock pursuant to the entity's distribution reinvestment plan.Common Stock Value Available in Primary OfferingCommon stock in primary offeringRepresents the value of common stock in primary offering pursuant to a registration statement.Contribution by Related Party to Acquire Partners Interest in Real Estate PartnershipContribution to Operating Partnership by the initial limited partnerThe contribution made by a related party for an ownership in a partnership, the purpose of which is to construct, sell, hold or invest in real estate.Dealer Manager Agreement [Abstract]Dealer Manager AgreementDealer Manager Distribution Fee Daily Accrual Calculation Percentage of Net Asset Value for SharesPercentage of NAV for Class A shares used in calculating dealer manager distribution fee daily accrualRepresents the percentage of entity's net asset value for shares on which the daily accrual of the dealer manager distribution fee is based.Dealer Manager Fee Daily Accrual Calculation Percentage of Net Asset Value for Each ClassPercentage of net asset value per share used in calculating dealer manager fee daily accrualRepresents the daily accrual proportion of the dealer manager fee, which is 0.55% of the company's NAV for each share class.Dealer Manager Fee Reallowed to Participating Broker Dealers Calculation Percentage of Net Asset Value used in CalculatingPercentage of net asset value per share used in calculating dealer manager fee reallowed to participating broker dealersRepresents the percentage of the entity's net asset value used in dealer manager fee reallowed to participating broker dealers if they meet certain thresholds of the entity's shares under management.Current Fiscal Year End DateDistributionsDistributionsThe entire disclosure for distributions.Distributions Disclosure [Text Block]Document and Entity InformationFinancial Instruments Not Measured at Fair Value [Policy Text Block]Financial Instruments Not Measured at Fair ValueDisclosure of the policy of carrying amounts of cash and cash equivalents which approximate their fair value.Funds Raised for Stock SubscriptionsFunds raised to be used for stock subscriptionsRepresents the funds raised, which are to be used for stock subscriptions.ING Investments Distributor LLC [Member]Dealer ManagerRepresents ING Investments Distributor, LLC, a dealer manager for the company's offering.Represents the Independent Directors Compensation Plan, which operates as a subplan of the Long-Term Incentive Plan.Independent Directors Compensation Plan [Member]Independent Directors Compensation PlanInitial Offering Expected Share PriceExpected purchase price of shares of the company (in dollars per share)Represents the expected purchase price of shares of the entity's common stock, not including any selling commissions, if applicable.Initial Offering Minimum Offering AmountMinimum Offering AmountRepresents the minimum purchase order received as a condition on shares offered for sale.Limit on Distribution to Stockholders as Percentage of Taxable Income (Loss) MinimumMinimum percentage of taxable income required to be distributed by the company to its stockholders in order to qualify as a REITRepresents the minimum percentage of taxable income required to be distributed by the company to its stockholders in order to qualify as a REIT.Limit on Reimbursement of Expenses Incurred by Advisor Percentage of Average Invested Net AssetsPercentage of average invested assets as a limit on reimbursement of operating expenses of AdvisorRepresents the percentage of average invested assets as a limit for reimbursement of operating expenses of Advisor.Document Period End DateRepresents the percentage of net income as a limit on reimbursement of operating expenses of Advisor. Net income is determined without reduction for any additions it reserves for depreciation, bad debts or other similar non-cash reserves and excluding any gain from the sale of the entity's assets for that period.Limit on Reimbursement of Expenses Incurred by Advisor Percentage of Net IncomePercentage of net income as a limit on reimbursement of operating expenses of AdvisorLong Term Incentive Plan [Member]Long-Term Incentive PlanRepresents Long-Term Incentive Plan, which provides for the grant of equity awards to employees, directors, consultants and advisors and was adopted by the entity board of directors.Represents the minimum purchase order amount to be received by the entity as a condition on shares offered for sale to Pennsylvania investors.Minimum Value of Share Purchase Orders Received for Selling Shares Within Stipulated Period from Initial Offering DateMinimum value of purchase orders to be received to sell shares before stipulated period after initial offering dateNumber of Classes of Shares of Common StockNumber of classes of shares of common stockRepresents the number of classes of shares of common stock.Offering Costs Funded by Advisor on Behalf of EntityOffering costs funded by advisor on behalf of entityRepresents offering costs funded by the advisor on behalf of the reporting entity during the "escrow period". The "escrow period" began on the date of the "Initial Offering Date" of May 16, 2011.Operating Expenses Funded by Advisor on Behalf of EntityOperating costs funded by advisor on behalf of entityRepresents operating expenses funded by the advisor on behalf of the reporting entity during the "escrow period". The "escrow period" began on the date of the "Initial Offering Date" of May 16, 2011.Organization and Offering Costs Reimbursement Limit as Percentage of Gross Proceeds from Primary Offering MaximumReimbursement limit of organization and offering expenses incurred as a percentage of gross proceeds from the primary offering, maximumRepresents the maximum reimbursement limit of organization and offering expenses that are incurred after the end of the Escrow Period, as a percentage of gross proceeds from the primary offering.Organization and Offering Costs Reimbursement Period Following End of Escrow PeriodPeriod over which organization and offering expenses are reimbursed following the end of the Escrow PeriodRepresents the organization and offering cost reimbursement period following the end of the Escrow Period.Organizational and Offering Costs Funded by Advisor on Behalf of EntityOrganizational and offering costs funded by advisor on behalf of entityRepresents organizational and offering costs funded by the advisor on behalf of the reporting entity during the "escrow period". The "escrow period" began on the date of the "Initial Offering Date" of May 16, 2011.Entity [Domain]Organizational Costs Funded by Advisor on Behalf of EntityOrganizational costs funded by advisor on behalf of entityRepresents organizational costs funded by the advisor on behalf of the reporting entity during the "escrow period". The "escrow period" began on the date of the "Initial Offering Date" of May 16, 2011.Other Assets [Policy Text Block]Other AssetsDescribes the entity's accounting policy for components of items classified as other assets on the balance sheet.Percentage of NAV for Allocation to Cash Cash Equivalents Securities and Other Liquid AssetsPercentage of NAV for allocation to cash, cash equivalents, securities and other liquid assetsRepresents allocation to cash, cash equivalents, securities and other liquid assets as a percentage of NAV.PENNSYLVANIAPennsylvaniaPeriod of Annual Stock Redemption Limit as Percentage of Total NAVPeriod of stock redemption limit (in months)Represents period of stock redemption limit.Period of Disqualification after Losing Qualification as R E I TPeriod for which company will be disqualified following the year during which qualification was lost (in years)Represents the period for which the company will be disqualified following the year during which qualification is lost unless the company is entitled to relief under specific statutory provisions.Period Within which Shares Are Redeemed At NAV Per Share on Date of Redemption after Deducting Short Term Trading DiscountPeriod within which shares are redeemed at NAV per share on the date of redemption after deducting a short-term trading discount (in days)Represents the period within which shares are to be redeemed at net asset value per share of the class of shares being redeemed on the date of redemption, after deducting short-term trading discount.Prepaid Expenses [Policy Text Block]Prepaid ExpensesDisclosure of accounting policy of the entity related to prepaid expenses.TENNESSEETennesseePercentage of quarterly stock redemption limit of the company's combined NAV of both classes of sharesRepresents the quarterly stock redemption limit as a percentage of the entity's combined net asset value of both classes of shares as of the last day of the previous calendar quarter.Quarterly Stock Redemption Limit as Percentage of Combined NAV as of Last Day of Previous Calendar QuarterReimbursement of Expenses Incurred by Advisor Period Considered for Calculation of LimitNumber of preceding fiscal quarters considered for calculation of limit on reimbursement of operating expensesRepresents the number of preceding fiscal quarters considered for calculation of limit on reimbursement of operating expenses.Selling Commissions to Dealer Manager Maximum LimitMaximum selling commissions (as a percent)Represents the selling commissions as a percentage of total price per share of the shares purchased in the primary offering as of the date of purchase.Represents the number of shares of stock to be issued as a condition for initial grants of restricted stock to be made, as stated in the plan document.Share Based Compensation, Arrangement by Share Based Payment Award Aggregate Shares Issued ConditionNumber of shares of stock to be issued as a condition for initial grants of restricted stock to be madeShare Based Compensation Arrangement by Share Based Payment Award, Award Exercise TermPeriod after which an employee's right to exercise an award expires.Exercise term (in years)Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments Other than Options Initial GrantsInitial grant of Class A shares of restricted stockRepresents the number of shares of restricted stock to be granted in an initial grant which is to take place per conditions stated in the plan.Minimum account balance to be maintained by stockholderRepresents the minimum account balance which the stockholder has to maintain as per the share redemption plan, if not maintained the entity may redeem all the shares held by the stockholder.Share Redemption Plan Minimum Account Balance to be Maintained by StockholderShare Redemption Plan Short Term Trading Discount as Percentage of Gross ProceedsPercentage of short-term trading discount of gross proceedsRepresents the short-term trading discount, expressed as a percentage of gross proceeds from redemption, which is applicable if shares are redeemed within a specified period.Summary of Organization and Offering [Line Items]Organization and offeringSchedule reflecting the summary of organization and offering policies.Summary of Organization and Offering [Table]Schedule reflecting the summary of organization and offering policies.Deposit in Real Estate InvestmentDisclosure of accounting policy for deposit on real estate investment.Deposit in Real Estate Investment Policy [Text Block]All States and Provinces [Domain]Purchase Agreement [Member]Purchase AgreementRepresents an open purchase agreement.Real Estate Purchase Price Exclusive of Closing CostsPurchase price exclusive of closing costsRepresents the amount of real estate purchase price exclusive of closing costs.Proceeds from Expense Support AgreementAggregate gross proceeds from the offeringThe cash inflow during the period from Expense Support Agreement.Reimbursement Payment Related to Expense Support AgreementReimbursement paymentThe cash outflow from reimbursement payment relating to Expense Support Agreement.Summary of Significant Accounting PoliciesEntity Well-known Seasoned IssuerEntity Voluntary FilersEntity Current Reporting StatusEntity Filer CategoryEntity Public FloatEntity Registrant NameEntity Central Index KeyEntity Common Stock, Shares OutstandingDocument Fiscal Year FocusDocument Fiscal Period FocusLegal Entity [Axis]Document TypeAdditional Paid in Capital, Common StockAdditional paid-in capitalAdditional Paid-in CapitalAdditional Paid-in Capital [Member]Adjustments to reconcile net loss to net cash provided by operating activities:Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]ASSETSAssets [Abstract]AssetsTotal assetsCash contributed to ventureBusiness Acquisition, Cost of Acquired Entity, Cash PaidOwnership interestBusiness Acquisition, Percentage of Voting Interests AcquiredPurchase priceBusiness Acquisition, Cost of Acquired Entity, Purchase PriceCash and Cash Equivalents, at Carrying ValueCash and cash equivalentsCash and cash equivalents, beginning of periodCash and cash equivalents, end of periodCash and Cash Equivalents, Policy [Policy Text Block]Cash and Cash EquivalentsClass of Stock [Domain]Class WClass ACommon Class A [Member]Class A sharesCommon StockCommon Stock [Member]Common stock, shares outstandingCommon Stock, Shares, OutstandingCommon stockCommon Stock, Value, IssuedCash consideration for shares issuedCommon stock, shares issuedCommon Stock, Shares, IssuedShares of common stock issued (in shares)Balance (in shares)Balance (in shares)Common stock, par value (in dollars per share)Common Stock, Par or Stated Value Per ShareCommon stock, shares authorizedCommon Stock, Shares AuthorizedCommon stock authorized (in shares)Economic DependencyConcentration Risk Disclosure [Text Block]Consolidation, Policy [Policy Text Block]Basis of Presentation and Principles of ConsolidationTitle of Individual [Axis]Deposit on real estate investmentDeposit AssetsDirector [Member]Independent directorsIncentive Award PlanDisclosure of Compensation Related Costs, Share-based Payments [Text Block]Incentive Award PlanDue to Related PartiesDue to affiliatesTotal depositEarnest Money DepositsWeighted average number of common shares outstanding:Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract]Earnings Per Share, Policy [Policy Text Block]Basic and Diluted Earnings per Common ShareNet (loss) income per common share:Earnings Per Share [Abstract]Equity Component [Domain]Escrow DepositEscrow accountFirst mortgage loanFirst Mortgage [Member]General and administrativeGeneral and Administrative ExpenseOperating expenses recorded on the entity's booksConsolidated Statements of OperationsIncome (Loss) from Continuing Operations, Per Basic and Diluted ShareBasic and diluted (in dollars per share)Income Tax, Policy [Policy Text Block]Income TaxesDue to affiliatesIncrease (Decrease) in Due to AffiliatesDeposit on real estate investment paid by Sponsor directly (recorded in other assets)Increase (Decrease) in Deposit AssetsIncrease (Decrease) in Operating Capital [Abstract]Change in operating assets and liabilities:Other assetsIncrease (Decrease) in Other Operating AssetsPrepaid assetsIncrease (Decrease) in Prepaid ExpenseIncrease (Decrease) in Stockholder's EquityIncrease (Decrease) in Stockholders' Equity [Roll Forward]LiabilitiesTotal liabilitiesLiabilities and Equity [Abstract]LIABILITIES AND STOCKHOLDER'S EQUITYTotal liabilities and stockholder's equityLiabilities and EquityMaximum [Member]MaximumMinimum [Member]MinimumMortgage Loans on Real Estate, Loan Category [Domain]Mortgage Loans on Real Estate, Other AdditionsAmount of mortgage loan at the close of ventureMortgage Loans on Real Estate, Description, Loan Category [Axis]Net cash provided by operating activitiesNet Cash Provided by (Used in) Operating Activities, Continuing OperationsCASH FLOWS FROM OPERATING ACTIVITIES:Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract]Net change in cash and cash equivalentsNet Cash Provided by (Used in) Continuing OperationsNet (loss) incomeNet (loss) incomeNet Income (Loss) Available to Common Stockholders, BasicNet incomeNew Accounting Pronouncements, Policy [Policy Text Block]Accounting Standards UpdatesNew Contract [Axis]New Contract [Domain]Expenses:Operating Expenses [Abstract]Organization and OfferingOrganization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block]Organization and OfferingOther assetsOther AssetsContribution to Operating Partnership by the entityPayments to Acquire Partners Interest in Real Estate Partnership, Net of Cash AcquiredInitial earnest money deposit paidPayments for Deposits on Real Estate AcquisitionsPlan Name [Domain]Plan Name [Axis]Preferred stock, $0.01 par value per share (50,000,000 shares authorized, none issued)Preferred stock, $0.01 par value per share (50,000,000 shares authorized, none issued)Preferred Stock, Value, IssuedPreferred stock, shares authorizedPreferred Stock, Shares AuthorizedPreferred stock authorized (in shares)Preferred stock, shares issuedPreferred Stock, Shares IssuedPreferred stock, par value (in dollars per share)Preferred Stock, Par or Stated Value Per SharePrepaid expensesPrepaid ExpenseProceeds from Issuance of DebtProceeds received from financingRange [Axis]Range [Domain]Deposit in Real Estate InvestmentReal Estate Investments, Net [Abstract]Related Party Transactions Disclosure [Text Block]Related Party ArrangementsRelated Party Transaction [Line Items]Related Party ArrangementsOrganization and Offering CostsRelated Party [Domain]Related Party ArrangementsRelated Party [Axis]Restricted Stock [Member]Restricted stockAccumulated deficitRetained Earnings (Accumulated Deficit)Accumulated DeficitRetained Earnings [Member]Economic DependencyScenario, Unspecified [Domain]ForecastScenario, Forecast [Member]Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]Schedule of Related Party Transactions, by Related Party [Table]Secured DebtProceeds from mortgage loan secured to partially fund the acquisitionMaximum number of shares that may be issued in accordance with the plan as a proportion of outstanding shares (as a percent)Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Outstanding Stock MaximumShare-based Compensation Arrangement by Share-based Payment Award [Line Items]Incentive award planShare price (in dollars per share)Share PriceShare-based Compensation Arrangement by Share-based Payment Award, Number of Shares AuthorizedAggregate number of shares reserved and available for issuanceAward Type [Domain]Share-based Compensation, Option and Incentive Plans Policy [Policy Text Block]Stock-Based CompensationSignificant Accounting Policies [Text Block]Summary of Significant Accounting PoliciesStart-up Activities, Cost Policy [Policy Text Block]Organization, Offering and Operating CostsStatement [Table]Scenario [Axis]StatementStatement [Line Items]CapitalizationConsolidated Statement of Stockholder's EquityConsolidated Statements of Cash FlowsEquity Components [Axis]Consolidated Balance SheetsClass of Stock [Axis]Stock Issued During Period, Shares, Period Increase (Decrease)Issuance of common stockStock Issued During Period, Value, New IssuesCash consideration for shares issuedAmount of shares issuedIssuance of common stock (in shares)Stock Issued During Period, Shares, New IssuesShares of common stock issued (in shares)Number of shares issuedStockholder's equity:Stockholders' Equity Attributable to Parent [Abstract]Total stockholder's equityBalanceBalanceStockholders' Equity Attributable to ParentCapitalizationStockholders' Equity Note Disclosure [Text Block]CapitalizationStockholders' Equity, Period Increase (Decrease)Subsequent Events [Text Block]Subsequent EventsSubsequent EventsSubsequent Event Type [Domain]Subsequent EventSubsequent Event [Line Items]Subsequent Event Type [Axis]Subsequent Event [Table]Subsequent eventSubsequent Event [Member]SUPPLEMENT TO NONCASH INVESTING ACTIVITY:Supplemental Cash Flow Elements [Abstract]Title of Individual with Relationship to Entity [Domain]Use of Estimates, Policy [Policy Text Block]Use of EstimatesBasic and diluted (in shares)Weighted Average Number of Shares Outstanding, Basic and Diluted